flutter pub run pigeon \
  --input pigeons/pigeon.dart \
  --dart_out lib/pigeon.dart \
  --objc_header_out ios/Classes/Pigeon.h \
  --objc_source_out ios/Classes/Pigeon.m \
  --objc_prefix FLT \
  --java_out android/src/main/kotlin/com/example/flutter_iot_plugin/Pigeon.java \
  --java_package "com.example.flutter_iot_plugin"